WeakMap.prototype.delete()

The delete() method removes the specified element from a WeakMap object.

Syntaxis

wm.delete(key);

Parametros

key

Required. The key of the element to remove from the WeakMap object.

Valor de retorno

true if an element in the WeakMap object has been removed successfully. false if the key is not found in the WeakMap or if the key is not an object.

Ejemplos

Using the delete method

var wm = new WeakMap();
wm.set(window, "foo");

wm.delete(window); // Returns true. Successfully removed.

wm.has(window);    // Returns false. The window object is no longer in the WeakMap.

Especificaciones

Compatibilidad de navegadores

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Notas especificas de Firefox

• Prior to SpiderMonkey 38 (Firefox 38 / Thunderbird 38 / SeaMonkey 2.35), this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per latest ES6 standard (error 1127827).

Ver también

• WeakMap